带有换行符的Oracle SQL VARCHAR列

Question

我试过这个:

update MESSAGE set TEXT = 'The following ' || CHAR(13) || CHAR(10) || 'has been disapproved'
        where TITLE = 'REQUEST_DISAPPROVED';commit;

和:

DECLARE
   msg VARCHAR2 := 'The following ' || CHAR(13) || CHAR(10) || 'has been disapproved';
BEGIN
   update MESSAGE set TEXT = :msg
            where TITLE = 'REQUEST_DISAPPROVED';
END;

和:

var this_is_a_variable varchar2(3000); 

exec :this_is_a_variable := 'The following ' || CHAR(13) || CHAR(10) || 'has been disapproved';
update MESSAGE set TEXT = :this_is_a_variable where TITLE = 'REQUEST_DISAPPROVED';

每个都会出现各种错误,我相信这只是一个语法问题.最终目标是当从此消息生成纯文本电子邮件时,它将适当地放置换行符.

这可能吗？

Answer 1

您需要使用CHR功能,新行字符将产生所需的结果.

UPDATE MESSAGE
SET TEXT = 'The following '
  || CHR(10)
  || CHR(10)
  || 'has been disapproved'
WHERE TITLE = 'REQUEST_DISAPPROVED';
COMMIT;